Rim breaker



J. R. SUPPLE.

RIM BREAKER.

`APPLICATION FILED MAY'H, 1920. I 1,420,781 Patented June 27, 1922.

.Y h... Y |l `JOHN R. sUPiLn, or PORTLAND, OREGON.

RIM BREAKER. e

T 0 all whom 'it may concern.'

Be it known that I, JOHN R. SUPPLE, a citizen of the United States, and a resident of Portland, county ci Multnomah, State of Oregon, have invented a new and useful improvement in RimBiealers, of which the following is a specification. n I

My invention relates to devices facilitating the removal and replacement of .the split tire-rims of the wheels otautomobil'es.

The object of my invention is to provide a device which is simple in its construction and operation and readily applied, and which, furthermore, only iequiresa minimum amount of physical exertion in doing the work of removing or replacing the tire:l in other words, the required power being applied by a very simple and safe manipulation of my device.

I attain my object by a device adapted Jfor use in connection with split rims of all sizes, and operating to contract the rim so as to permit its convenient removal when the tire is to be removed, and also for re-expanding the rim when the tire is to be remounted thereon.

By way of a general description, my device may be said to resemble in its principles oi. construction and operation, a miniature crane, comprising a frame adapted for being firmly mounted on one section of the tirerim adjacent the split and so as to project across the latter onto the other rim section, the frame carrying a block movable in a plane co-incident with a chord of the circle of the rim, said block having means for firmly holding one section ot the rim adjacent the split, and means being provided for moving the block thereby separating and bringing together again the divided rim section, and other means being provided for moving diametrically inward or outward, the free end of that section held bv the block, thereby contracting or re-expanding the rim.

The details of construction andvoperation are illustrated in the accompanying draw ings in which,

Fig. l is a partial side elevation of a tire rim with my device firmly mounted thereon over the split as in practice;

Fig. 2 is a plan view of the parts illustrated in Fig. l to which it relates;

Fig. 3 is a fragmental section of my device taken on line 3 3 of Fig. 2, illustrating one phase of action of my device namely, as here shown my device has been operated Specification of Letters Patent. Patgnfd Iuge 27 Application filed May 11, l

1920. serial No. 380,459.

to pull the divided sections of the rim apart and to move one section diametrieally inward so as to contract the circle of the rim; Fig. 4L is a transverse section taken on line l--t of Fig. 3;

Fig. 5 is a perspective of 'the movable block oi' my device carrying the I i grap le clamped to one of the divided sectionspo'f the rim; and i I Fig. is a cross section ofthe tire rim and shows Iragments of the arms one of the grapples illustrating how itis engaged with the rim.' i 'l My device consists of a frame a, compris?v ing a leg b, adapted for being supported i on the tire-rim section e, and having a rightangular portion (Z projecting iromone side ot the leg I), and a strut c projecting Vfro/Iii the opposite side of said leg. The strut'ic is provided with a socket g in which is'inf l The screw g is journaled in one endfof'the blc-ck of the angular frame part (Z and'has its other end journaled ina plate 't fastened on the opposite end o'f said'trame part CZ as shown at u. Thescrew q is threadedthrough the wall n of the block Wa and extends through the slot ,s of the wall n of the block m. Hence by the manipulation of the hand wheel w, the block m may be moved in a plane co-incident with a chord of the circle of the tire rim.

The topof the bleek m is recessed to rey ceive the boss l of the hand-wheel 5, the eye oi which is threaded. Theblock m is provided with av cavity accommodating the slotted head 2 of the screw 3 which is threaded in the eye of said hand-wheel 5. Said head 2 of the screw 3 pivotally carries a grapple 8. A headed screw l() extends through the arms of said grapple and is provided with a winged nut l2by the adjustment of which the arms of the grapple h may be drawn iirmly together so as to clamp the rim e as illustrated in Fig. 4. The web 8al of the grapple S is recessed as at 8c so as tov accommodate thetongue 14C usually provided on one section of the tire-rim and interlocking With the socket 13 provided on the other section on the tire-rim (see Fig. 3).

The block m is recessed as shown in Fig. 5 so as toc provide flanges p, Q9 for bearing against the underside of the sides of the Walls of the trame part l thereby lirmly mounting the block in its said guide-ways.

In order to obtain at all times an etlicient hold of the flanged ends 8" et the grapple 8, on the convexed outer tace oit the rim section on which it is clamped, l prefer to make said flanges convex as illustrated more clearly at 8b in F ig. l.

My device is used in the following manner:

The leg b of the frame of my device is placed on oneV section e of the tire-rim adjacent the split, and the grapple l7' is then astened to such section. The grapple 8 is next firmly fastened to the other section e of the rim; the hand-wheel w is then manipulated so as to move the block m to the right with respect to Fig. l, in so doing, separating the sections of the rim. The hand-wheel 5 is next manipulated so as to move the rim scction held by the grapple L diametrically in- Ward, so that the rim section e will be positioned over` the rim section e. Then the hand-Wheel 'w is operated to move the bloclr m to the left thereby contracting the circle of the rim as illustrated in Fig. 3. And in order to re-eXpand and re-unite the divided free ends of the rim, the hand-wheels w and 5 are operated, as apparent, to bring about the reverse motion of the parts, in so doing', finally restoring the tire-rim to its normal state.

I claim:

l. A device of the character described comprising a frame adapted for being firmly mounted on one section ot' a split tire rim so as to project over the split dividing the rim, a block carried by the trame and movable in a plane co-incident with the chord of the eir- 'cle'oii the rim, means provided on said block for firmly holding the end of the other section of the rim, means for moving the block thereby to separate and bring together again the divided rim sections at the split, and other means for moving said rim-holdingmeans oli the bleek dia-metrically inward and outward, thereby contracting and re-expand ing the rim.

2. A device of the character described comprising a trame consisting ot a leg adapted 'for mounting on a tire-rim and provided with an angular part projecting 'from one side oi the frame in the plane oiZ the circle of the rim on Which mounted, a strut projeeting from the opposite side of said leg, an adjustable member carried by the strut, a grapple carried by the adjustable member, a block slidable in said angular part of the trame, an adjustable member pendent Yfrom the block, a grapple carried by the latter adj ustable member, means for drawing the arms of the latter grapple irmly together, means t'or moving the bloclr.

3. A device oit the character described comprising a. Vtrame consisting ot a. leg adapted tor mounting on tire-rim, and provided with an angular part projecting from one side ot the frame in the plane ol the circle oi the rim on which mounted, a strut proj ecting from the opposite side of said leg, an adjustable member carried by the strut, a grapple carried by the adjustable member, a block slidable in said angular part of the trame, an adjustable member pendent from the block, means lor moving the block, a rotary member ournaled in the block, a pendent screw-rod threaded in said rotary member, a. grapple carried by the screw-rod, and means for drawing the arms of the latter grapple firmly together.

JOHN R. SUPPLE. 

